PADLOC: a one-dimensional computer program for calculating coolant and plateout fission product concentrations. [HTGR]

Technical Report · Tue Nov 01 00:00:00 EST 1977

DOI:https://doi.org/10.2172/5289739· OSTI ID:5289739

Hudritsch, W W; Smith, P D

The one-dimensional computer program PADLOC is designed to analyze steady-state and time-dependent plateout of fission products in an arbitrary network of pipes. The problem solved is one of mass transport of impurities in a fluid, including the effects of sources in the fluid and in the plateout surfaces, convection along the flow paths, decay, adsorption on surfaces (plateout), and desorption from surfaces. These phenomena are governed by a system of coupled, nonlinear partial differential equations. The solution is achieved by (a) linearizing the equations about an approximate solution, employing a Newton Raphson iteration technique, (b) employing a finite difference solution method with an implicit time integration, and (c) employing a substructuring technique to logically organize the systems of equations for an arbitrary flow network.

• Research Organization: General Atomics, San Diego, CA (United States)
• DOE Contract Number: EY-76-C-03-0167-051
• OSTI ID: 5289739
• Report Number(s): GA-A-14401; TRN: 78-005858
• Country of Publication: United States
• Language: English

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